Class / Patent application number | Description | Number of patent applications / Date published |
310216111 | Core having a particular dimension | 16 |
20100026135 | ELECTRIC MACHINE - A stator assembly adapted for use in an electric motor. The assembly includes a stator core having an annular rim and a plurality of teeth extending radially inward from the rim. The stator core has an outer diameter, a root tooth diameter and an inner diameter. Each tooth has a root, a neck extending inward from the root, a head opposite the root, and a length measured from its root to its head. The neck has a width. Each adjacent pair of teeth define a slot having an area. The assembly also includes a winding having aluminum and/or copper wrapped around at least three teeth of the stator core. The stator core and winding have four, six or eight magnetic dipoles. The stator core outer diameter is in a range from about 5.1 inches to about 5.9 inches. The stator core inner diameter is less than about 3.0 inches. | 02-04-2010 |
20100141080 | INDUCTION MOTOR WITH IMPROVED TORQUE DENSITY - An induction motor embodiment includes a stator defining a stator bore, the stator including a stator yoke having a stator yoke thickness and a plurality of stator teeth, the teeth having a common length, with each of the stator teeth including a stator tooth center portion that extends from a stator tooth bottom portion proximal the yoke to a stator tooth tip portion, with adjacent stator teeth defining a stator slot between them, each stator slot having a stator slot bottom that extends along a stator slot bottom length. In the embodiment, the center portion has a stator tooth width that is less than or equal to one half the stator slot bottom length. In the embodiment, the stator tooth width is smaller than a stator slot opening width distance. In the embodiment, a ratio of stator yoke thickness to stator tooth width is at least 5:1. A rotor is rotably mounted in the stator. | 06-10-2010 |
20100148624 | INTERIOR PERMANENT MAGNET TYPE BRUSHLESS DIRECT CURRENT MOTOR - Disclosed is an interior permanent magnet type brushless direct current (BLDG) motor including a stator having a plurality of slots wound in a distributed winding manner, and a rotor positioned in the stator, configured to rotate with respect to the stator, and having a rotor core, a plurality of permanent magnets inserted in the rotor core and a plurality of flux barriers, wherein a flux barrier angle of the rotor is determined by multiples of twenty as an electrical angle and the multiples of twenty relates to a number of slots of the stator. | 06-17-2010 |
20100225197 | STATOR CORE - A stator core that includes a pair of poles separated by an air gap. Each pole includes a first side adjacent the air gap and a second opposite side remote from the air gap. A pole arc is formed in the first side and an arcuate mounting recess is formed in the second side of each pole. Additionally, an electric machine that includes the stator core. | 09-09-2010 |
20100314965 | MOTOR AND ELECTRONIC APPARATUS USING THE SAME | 12-16-2010 |
20100327691 | MOTOR AND ELECTRONIC APPARATUS USING THE SAME | 12-30-2010 |
20100327692 | MOTOR AND ELECTRONIC APPARATUS USING THE SAME | 12-30-2010 |
20130169106 | SINGLE-PHASE INDUCTION MOTOR - A single-phase induction motor in which coils are wound around a plurality of teeth by a concentrated winding method is constructed such that an area of a smallest of all cross-sections of a core back element taken along planes which are parallel or substantially parallel to an axial direction is about 0.90 or more times an area of the smallest of all cross-sections of the teeth taken along planes which are parallel or substantially parallel to the axial direction, to prevent or minimize leakage of the magnetic flux. | 07-04-2013 |
20140203681 | Small-size or Micro Electric Machine and Its Stator Iron Core - A small-size or micro electric machine and its stator iron core. Such machine comprises rotor assembly and stator assembly installed between front & rear end covers; the stator assembly also includes the stator iron core evenly set with multiple stator slots; the bottom width of the stator slot is as 7-10 times large as the opening width of the stator slot; the shoulder width of the stator slot is as 4-7 times large as the opening width of the stator slot; the slot bottom width of the stator slot is as 1.3-2.0 times large as the slot shoulder width of the stator slot. The said small-size or micro electric machine has advantages of lower input power, higher efficiency and higher output moment of force, that is a high-efficient and energy-saving electric machine. | 07-24-2014 |
310216112 | Specific pole pitch | 7 |
20090184602 | Permanent-Magnet Synchronous Machine with Suppression Means for Improving the Torque Ripple - The invention relates to a permanently excited synchronous machine ( | 07-23-2009 |
20100127593 | ELECTRIC MOTOR - An electric motor comprises a stator and a rotor rotatably mounted confronting the stator. The rotor has a rotor core which comprises at least a first tooth, a second tooth and a third tooth which are adjacent. Each of the teeth comprises a rib section radially and outwardly extending from a core and a tooth section located at an outer end of the rib section. The angle between the first tooth and the second tooth is n degrees, wherein when the rotor core is rotated n degrees to move the first tooth towards the second tooth, the rotated second tooth does not coincide with the pre-rotated third tooth. | 05-27-2010 |
20110074243 | STATOR FOR AN ELECTRIC MACHINE - A stator for an electric machine has a circular stator body surrounding a rotor with an air gap therebetween. The stator has radially extending slots that define radially extending stator teeth. Multiple electric windings are located in the slots to define peripherally spaced magnetic poles. Separate coil groups establish multiple phases for the electric machine. Motor torque ripple is attenuated by forming the stator teeth with different widths for a given coil group. | 03-31-2011 |
20110309712 | STATOR WITH INTERMEDIATE TEETH - A stator for an electrical machine, the stator including a plurality of stator teeth distributed in a non-uniform pattern with a short and long tooth spans along a circumference of the stator, wherein each stator slot between two stator teeth distanced by a long tooth span including an intermediate tooth for carrying a magnetic flux. | 12-22-2011 |
20130088116 | Electrical Machine With Circumferentially Skewed Rotor Poles Or Stator Coils - A rotor for an electrical machine including a plurality of pole sections with adjacent poles within each of the pole sections being distanced by a first uniform pole pitch. Adjacent poles belonging to different pole sections are distanced by a second (smaller) pole pitch at one end of each pole section, and by a third (larger) pole pitch at the other end of each pole section. Alternatively, a corresponding adjustment of coil pitches can be done in a stator of an electrical machine. | 04-11-2013 |
20160006301 | SYNCHRONOUS MOTOR - A synchronous motor is configured such that a rotor, in which permanent magnets having poles are provided at an equiangular interval in a circumferential direction, with magnetic poles with different polarities being alternately provided, is provided to face a stator, in which nine teeth are formed at an equiangular interval in a circumferential direction, and the tip width of the central tooth of each phase among the teeth of each phase grouped into three phases with each phase including three adjacent teeth is larger than 32° and smaller than 40°. | 01-07-2016 |
20220140667 | TRACTION ENGINE FOR A VEHICLE - An electric machine for a vehicle includes: a stator body, the stator body having, in an alternating manner, stator teeth and stator grooves with conductor elements which are arranged therein, and a yoke section with a radially extending yoke height on the stator body radially outside the stator grooves and the stator teeth, the stator body having a stator outer radius. A ratio of the yoke height in relation to the stator outer radius is between 0.20 and 0.28. | 05-05-2022 |